\chapter{Introduction}

This paper is presented as final project for the course ``Wireless Sensor Networks and Electronics'', taught at Aarhus School of Engineering in the spring semester of 2011. During this project evolution of RSSI and LQI over distance has been evaluated in different scenarios. Data collection and result analysis has been carried out, including plots for the different cases. The feasibility of positioning using these measurements has been studied and evaluated in a practical setup.

This study has mainly been carried out using the TelosB platform from Crossbow technologies. In a particular case, performance of the ASEBAN mote, developed at Aarhus School of Engineering, has been studied and compared with the previous platform.

\section{Document structure}
This report is composed by six chapters. In the Introduction, current chapter, a general overview of the document will be given. Chapter~\ref{ch:theory}, Theoretical Background, will introduce the main concepts that have set the basis for this work. Methodology, chapter~\ref{ch:method}, will expose the designed and followed procedures while conducting the experiments. Chapter~\ref{ch:experiments}, Experiments and results, will present the different test setups that have been used and elaborate on the obtained results. Localization results and experiments will be described in chapter~\ref{ch:localization}. Finally, chapter~\ref{ch:conclusions}, will wrap up this work summarizing results and most relevant outcome. 
